Update user.md

meizu allow in the background

_vendors-content/meizu/user.md

@@ -11,3 +11,5 @@ Adjust your settings:
 * **Device Settings > Advanced Settings > Battery Manager > Protected apps** – check your app as **Protected**
 
 * Enable **Device Settings > Apps > your app > Battery > Power-intensive prompt** and **Keep running after screen off**
+
+* **Security > Permissions > Background processes > allow running in background**